I noticed on my project 87 gt that the vinyl headliner in it has some seams pulling apart. I don't like the vinyl anyway, so I want to use another type of material. I did a search on the web and found a site that sells material for automotive use. I can't remember what the site was, but the prices I didn't think were bad, surprisingly. Up to around 18 dollars for something fancier than vinyl. When I find it again, I'll post the link.